IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0493952
(2012-06-11)
|
등록번호 |
US-8840119
(2014-09-23)
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발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
13 |
초록
▼
Embodiments disclosed herein provide a modular apparatus and system for automatically raising and lowering the deck height of a towed trailer. The embodiment is comprised of a trailer frame to which a drop axle is attached via a dynamic height adjustable means, such as electrically operated air spri
Embodiments disclosed herein provide a modular apparatus and system for automatically raising and lowering the deck height of a towed trailer. The embodiment is comprised of a trailer frame to which a drop axle is attached via a dynamic height adjustable means, such as electrically operated air springs. The drop axle may have two or more wheels mounted to opposite ends of the drop axle and attached to the trailer frame via the dynamic height adjustable means. Thus allowing the dynamic height adjustable means to raise and lower the trailer frame above and below the centerline of the wheels, which aids loading and unloading of cargo onto the trailer.
대표청구항
▼
1. A modular apparatus for raising and lowering the deck height of a trailer comprising: a trailer frame;two or more wheels each mounted to opposite ends of a drop axle via an air spring mounted between said trailer frame and said wheels,said air springs are connected via one or more compressed air
1. A modular apparatus for raising and lowering the deck height of a trailer comprising: a trailer frame;two or more wheels each mounted to opposite ends of a drop axle via an air spring mounted between said trailer frame and said wheels,said air springs are connected via one or more compressed air lines to an air compressor connected to an air reservoir tank wherein when said air compressor pulls air to and from said air springs via the compressed air lines into and from the reservoir tank, such that the air springs collapse when the air is drawn out, thereby lowering said trailer frame below the center line of said wheels and the air spring inflate when filled, thereby raising said trailer frame above said centerline of said wheels,wherein said drop axle is further mounted to said trailer frame at each wheel via a squat bar, wherein one end of said squat bar is mounted to said drop axle at each wheel, and an opposite end of said squat bar is adjustably mounted to said trailer frame, andwherein each squat bar is further adjustably mounted via a shock absorber to dynamic height adjustable means. 2. The modular apparatus of claim 1, wherein one or more pan-hard bars are connected on one side of said trailer frame and traverses the width of said trailer frame to connect to a squat bar mounted on an opposite side of said trailer frame, wherein said pan-hard bar serves to locate and center the drop axle. 3. The modular apparatus of claim 2, wherein said pan-hard bar is adjustably attached to said trailer frame and/or said squat bar. 4. The modular apparatus of claim 1, wherein said drop axle comprises a substantially “U” shape such that the drop axle comprises a substantially horizontal portion at its center, with substantially vertical portions on its opposites ends, such that said vertical portions extend up to attached to center hubs of said wheels. 5. The modular apparatus of claim 1, wherein said wheels comprises a spinning center hub such that the drop axle does not turn at all when mounted to the wheels. 6. A system for raising and lowering the deck height of a trailer comprising: a trailer frame; andtwo or more wheels each mounted to opposite ends of a drop axle via a dynamic height adjustable means mounted between said trailer frame and said wheels; and such that said dynamic height adjustable means raises and lowers said trailer frame above and below the center line of said wheels to aid loading cargo onto said trailer frame,wherein said dynamic height adjustable means comprises air springs coupled to an electrically operable air compressor and an air reservoir tank such that said air compressor pulls air to and from said air springs via compressed air lines into and from the reservoir tank, such that the air springs collapse when the air is drawn out, thereby lowering said trailer frame below the center line of said wheels and the air spring inflate when filled, thereby raising said trailer frame above said center line of said wheels,wherein said drop axle is further mounted to said trailer frame at each wheel via a squat bar, wherein one end of said squat bar is mounted to said drop axle at each wheel, and an opposite end of said squat bar is adjustably mounted to said trailer frame, andwherein one or more pan-hard bars are connected on one side of said trailer frame and traverses the width of said trailer frame to connect said pan-hard bar to said squat bar mounted on an opposite side of said trailer frame using an adjustable attachment means, wherein said pan-hard bar serves to locate and center the drop axle. 7. The system of claim 6, wherein each of said squat bars are further adjustably mounted via shock absorbers to said dynamic height adjustable means. 8. The system of claim 7, wherein the dynamic height adjustable means, drop axle, squat bars, and shock absorbers are removably attachable to the trailer frame. 9. The system of claim 7, wherein the dynamic height adjustable means, drop axle, squat bar, and shock absorbers are fixably attached to the trailer frame. 10. The system of claim 6, wherein said pan-hard bar has an adjustable attachment means for attaching to said trailer frame and/or said squat bar. 11. The system of claim 6, wherein said drop axle comprises a substantially “U” shape such that the drop axle comprises a substantially horizontal portion at its center, with substantially vertical portions on its opposites ends, such that said vertical portions extend up to attached to center hubs of said wheels. 12. The system of claim 6, wherein said wheels comprises a spinning center hub such that the drop axle does not turn at all when mounted to the wheels. 13. The system of claim 6, wherein each of the dynamic height adjustable means are independently operable. 14. A system for raising and lowering the deck height of a trailer comprising: a trailer frame; andtwo or more wheels each mounted to opposite ends of a drop axle via a dynamic height adjustable means mounted between said trailer frame and said wheels; and such that said dynamic height adjustable means raises and lowers said trailer frame above and below the center line of said wheels to aid loading cargo onto said trailer frame,wherein said drop axle is further mounted to said trailer frame at each wheel via a squat bar, wherein one end of said squat bars is mounted to said drop axle at each wheel, and an opposite end of said squat bar is adjustably mounted to said trailer frame, andwherein one or more pan-hard bars are connected on one side of said trailer frame and traverses the width of said trailer frame to connect said pan-hard bar to said squat bar mounted on an opposite side of said trailer frame using an adjustable attachment means, wherein said pan-hard bar serves to locate and center the drop axle. 15. The system of claim 14, wherein said dynamic height adjustable means comprises air springs coupled to an electrically operable air compressor and an air reservoir tank such that said air compressor pulls air to and from said air springs via compressed air lines into and from the reservoir tank, such that the air springs collapse when the air is drawn out, thereby lowering said trailer frame below the center line of said wheels and the air spring inflate when filled; thereby raising said trailer frame above said center line of said wheels. 16. The system of claim 14, wherein said dynamic height adjustable means comprises hydraulic springs coupled to an electrically operable hydraulic pump and an a hydraulic reservoir tank such that said hydraulic pump pulls hydraulic fluid to and from said hydraulic springs via hydraulic lines into and from the reservoir tank, such that the hydraulic springs collapse when the hydraulic fluid is drawn out, thereby lowering said trailer frame below the center line of said wheels and the hydraulic springs inflate when filled, thereby raising said trailer frame above said center line of said wheels. 17. The system of claim 14, wherein said dynamic height adjustable means comprises magnetically adjustable springs coupled to an electrical control system, wherein the magnetically adjustable springs dynamically damp forces between the wheels and the trailer frame and further allow the deck of the trailer frame to be raised or lowered. 18. The system of claim 14, wherein each of said squat bars are further adjustably mounted via shock absorbers to said dynamic height adjustable means.
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